Carbureter.



H. M. REIGHENBAGH; OARBURETER.

#PPLIGATIOH FILED APR. 1. 1910.

Patented Nov. 22, 1910.

A 2 SHBBTSSHEET 1.

N fitter/megs H. M. REIGHENBAGH.

OARBUBETER.

QPLIQATION nun APR.1 1910.

UNITED sTArEs PATENT OFFICE.

HENRY M. REICHENBACH,.OF CHICAGO, ILLINOIS.

oannunn'rnn.

T all 'uihom' it may concern:

Be it known that I, HENRY M. Ruler-imp" BACI-I, a citizen of the UnitedStates, residing at Chicago, in the county of Cook and State ofIllinois, have invented certainnew and useful Improvements inCarburetors;

and I do hereby declare the following to be i a full, clear, andLXtl'tli'tlSCIlP'tlOIl of the invention, such as will enable othersskilled in the art to Which'it appertains tomakeand use the same. i

My invention relates to improvements in carburetors for supplyingvolatilized liquid fuel to internal combustion motors.

The objectsof my invention are to provide an improved 'carbureter withmeans for effecting an improved control of the auxiliary air supply, animproved volatilization of the fuel, having removable nozzlescontrolling the initial. air supply, making it possible with oneapparatus to i'neet varying motor conditions, and having a tangentialauxiliary air current and means for pro-.

ducing a vortex around the fuel nozzle to sub-divide the fuel and bringit into 111M inate contact with a he-at supplying surface.

VViththese objects in View, my invention consists in the constructionand combina- .tions of parts as hereinafter described and olainied.

In the accompanying drawingsFigure 1 is a side elevation, partly insection, of my improved carburetor. Fig. 2 IS a cross-section thereof onthe line 22 ofFi 1. Fig. 3 is a side elevation,showing part of the meansfor controllingthe auxiliary air current. Fig.4 is across-section on alarger scale of the upper part of. the volatilizing apparatus, Fig. 5 isa view, partly in elevation, showing the removable nozzle for theinitial supply of air,

surrounding the fuel jet. Fig. (5 is a cross section through the initialair nozzle, showing the inlets arranged tangentially. I

. 1,..represents the inlet supply for the fuel,

'ivhidh delivers into a large casing 2, having a float 3 therein. Thiscasing 2 is fastened to the body of the carburetor by long bolts 3*. Thetop 'of the casing 2 is open, and in it is screwed a ring 4, into whichis screwed a downwardly projecting cylinder 5, the upper end of. whichis open. In a central ,perfoiat-ionin thelower head 6 of the cylindcr 5,crewed a tube 7, communicating .with the inside of the casing 2 saidtube fleeing beveled at its upper end.

Within this Specification of Letters Patent. Application filed April 1,1910. Serial No. 552,913.

Patented 'Nov. 22, 1910.

tubeworks freely a needle valve 8. This needle valve is provided with ascrew-threaded shank 9, operated by a: head 10 and passing through ascrew-threaded projection 11 in the bottoin'of the casing 2. v v

12 represents a nut, which is screwed onto the lower end of theprojection 11 and holds in place apacking 13 to prevent leaking.

14.- represents the initial air nozzle, which is open at the bottom andprovided with a cone-shaped upwardly projecting portion 15, locatedabove the end of the tube 7. The tube lt is provided with. a number ofiiicliiied tangentially arranged inlets 16, so

" arranged that as the air and fuel are sucked in, a vortex will-beformed, thus aiding in the thorough volatilization of the fuel. The

part l t-is screwed into," or OtlIQIWlSQIGIDOV 4 ably secured to, thetube 17, which is formed integral with and a part of a casting 18.

The tube 17 has a flaring opening 19 at its top. The casting 18 iscircular in form-and is provided with an upwardly extending annularflange 20, screw-threaded on its intenor and engaging the lower endof acyl inder 21, in which the volatilization takes place. This cylinder 21isprovided with an I inlet tum 22 aiid an outlet tube 23, through whichpass the products of combustion from the engine, or, f desired, anyother suitable means may be employedfor heating the iiiterior of thecylinder 21.

24 represents an extension on-the side of the cylinder 21, which open tothe air, and a spire casting makes a spiral passage leading from, thepart2a upwardly into the large tube 26, whichcommunicates directly withthe engine, this spiral passage being shown in Figs. 2 and at.

28 the part closing the upper part .of the cylinder 21, it being made inone piece with face )late'33.. )rovided with an ooenin 34- which may heclosed by a flap valve .5,

27 represents one wall of the passage, and

which valve works inwaf dly, as indicated in dotted lines in Fig; 2.

36 represents a projecting arm firmly fastened to the valve 35, to whichis pivoted the curved operating lever 37, which is monntother arm 45. Ona pin 46 on the outer end of the arm 45 is mounted an arm 47, having pin48 on its inner end, the end of the arm 47 contacting with the lever orarm 40. The arm 44 of the bellcrank lever has 0nd end i upturned, asshown at 49, and through this passes a screw.rod 50, whose posit-ioncanbe adjusted by a screw 51. To the end of the screw rod 50 and to thepin 48, is attached aspiral spring 52, which opposes the inward motionof the flap valve 35 and tends to keep it normally closed. The arm 44has upon it a projecting car, through which I passes a screw 54,provided with a nut 55,

said screw working in the slot 42. By this construction, the bell cranklever can be adjusted, as indicated in dotted lines in Fig. 2, and fixedin any desired position.

56 represents an ear carried by the arm 7 47 ofthe bell crank lever, andto this ear is fixed a' cord or rod 57, leading up to some point nearthe operator.

It is obvious that by the construction shown, the spring 52 normallytends to keep the flap valve 35 in a closed, position, the

suction. caused by the movement of the en gine piston being great enoughto overcome the tension of the spring 52, admitting, through theauxiliary air opening 34, an additional supply of air, which is mixedwith the already vaporized'charge of fuel mixed with air, in the tube26.

To vary the tension of the spring 52, it is merely necessary to move thebell crank lever and fasten it, by means of the screw' 55, in anydesired position on the quadrant 41; This will bring the end of thelever or arm 47 into. a different position relatively to the arm 40,thus increasing the effective tension of the spring, which, acts on thearm 40 farther away from its pivot pin 38.

v In Fig. 5, a modified form of removable air'no zzle is shown,consisting of a cylinder 14?, screwing into the lower end of a tube 17.Through the perforated end of the cylinder 14 passes a fuel inlet tube 7for the fuel, similar to the tube 7. lfi -represents inclined,tangentially arranged air inlets,

but the part corresponding to the part- 15, in I Fig. 1, is omitted.

' The operation is as follows The engine being in motion and thethrottle valve 31 being open, a charge of air is drawn in through theinclined tangential inlet, 16 in the form of a vortex, which at the sametime I tube 30, and the heavier parts being thrown outward bycentrifugal force, strike thetube 30 and are immediately vaporized. Thecarbureted air then passes up through the tube 26 to the engine, anadditional sup ply of air, if needed, being drawn in through the opening34. In starting the engine, during the cranking operation, the'valve 35is kept closed by pulling upon the cord or rod 57.

By the construction described, the auxiliary air supply is completelyunder control; the volatilization of the fuel is completely effected,and the drops of unvaporized particles being thrown out against thecylindrical tube 30.

Providing the carbureter with removable nozzles controlling the initialair supply, it is possible with one apparatus to meet all sorts ofvarying conditionsof the motor.

The arrangement whereby a vortex is caused during the volatilization ofthe fuel, 1

throwing the heavier parts to the outside by centrifugal force, is anespecial advantage, especially when considered with a tangentialauxiliary air inlet.

The arrangement of the tension spring and parts connected thereto isalso of especial importance. By the construction shown, the improvedadjustment of the auxiliary air supply permits an adjustment of thetension on the valve for both high and low speeds, at the same timemaking itcorrect for all intermediate speeds.

The difficulty heretofore met with in connection with automaticcarbureters is due to the fact that it has been difficult and almostimpossible to produce a spring correctly proportioned to the variousspeeds. An increasing spiral spring is commonly used. While this mightbe (:01 ct for some motors, it is not adjustable in the true sense ofthe word. Great difliculty is experienced in properly calibrating aspring of the increasing spiral type, whereas with the plain spiral typethis is a simple matter, the tension being directly proportional to thedistension.

Various spring devices have been .used' in connection with carbureters,but I believe 1 that mine 15 the first to produce the increasing tensionin any and practically, of the adjuster.

I claim 1. In a carbureter, the combination of a fixed ratio,mechanically and within the observation casing provided with a fuelinlet and with tangential air inlets,

casin said casing being provided with an means for heating said.

opening forming a secondary air inlet, a valve for closing said opening,a spring DOL' mally holding said valve closed, and conned tions acting.to mechanically produce any desiredinerease in thetension of the spring,controlling the movement that is at all times limited or fixed in.magnitude, substantially described.

2. In a carbureter, the combination ofa fuel tank, a casing throu hwhich a heating fluid is passed, a pipe lea ing from said tank into saidcasing, and a removable nozzle provided with inclined tan entially.arranged inlet openings, said nozz e being secured to 4 asdescribcd.

the lowenend of said casing, substantially crease in the tension of saidspring controldaily as described.

ling a movement that is at all times limited or fixed in" magnitude,andnieans for positively closing said valve when desired, substan- 4. Ina'carbureter, the combination of a casing composed of two parts, throughone of which the. fuel charged air passes, and

through the other of which a heating agent passes, a removable dirnozzle provided with inclined tangentially arranged inlet. openings,said nozzle being secured to one (if said parts, a fuel tank having adiscl'iarge pipe in proximity to said inlet openings, partilions forminga spirally arranged air passage for furnishing an additional. supply orair, a valve normally closing one end of said passage, :1 spring,connections between said spring and said valve whereby the springholdssaid valve normally closed, said. con

nections being adjustable and ca able of be in fastened in severalpossib e positions,

su stantially as described.

5; In a carburetor, the combination of a casing, a tube centrallyarranged therein, inlet and outletpipes connected to said casing for theconduction of a heatin fluid therethrough, anair' nozzle provideinclined, tangentially arranged inlet openings, said air nozzle beingconnectedto said casing, fuel tank, and a tube delivering. from saidtank into said air nozzle, a tubecentrally passing through said casing,partiwith 1 tions forming a spiral inclined passage for the admission ofan auxiliary air current,

a valve for closing said passage, a sprin normally tending to holdsaidvalve clos and connections for varying the intensity 'of said spring,including a bell crank lever, an arm pivoted on said lever, to which arm'one'end of said spring is attached, a lever said lever is rigidlyfixed, and a curved lever attached to said pin and to said valve,substantially as described.

tl/In a carbureter, the combination of a.

central casing with a tube centrally arranged therein, inlet and outletpipes for theconduction of a heating fluid through said casing, aroundsaid tube, an air nozzle centrally and removably connected to the lowerend of said casing, a fuel. tank, a pipe deagainst which said arm bears,a pin to which livering from-said tank into said air nozzle,

partitions f0III11Il a spirally inclined pas sage for an auxi iaryair'supply, a valve adapted to close said passage, :1 spring, and

connections between said valve and said spring, whereby said springnormally tends to close said passage, said connections bein providedwith means for adjusting the ten-' .sion ofsaid spring in a regularratio, and a pipe provided with a throttle valve connected to saidcasing, substantially as described,

In testimony whereof, I' aiiix my signature, in presence of twowitnesses.

HENRY M. REICHENBACH.

Witnesses: I l a Y Louis Fnninnne.

7 Don Conn.

